Car lamp
The headlights, with their three-light-source structure and specially designed light-emitting lenses, solve the problems of insufficient brightness and poor heat dissipation in existing headlights, achieving high brightness and good heat dissipation for switching between high and low beams, making them suitable for the automotive lighting field.
Patent Information
- Application Number
- CN202423030136.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing car headlights are insufficient in brightness and have poor heat dissipation when switching between high and low beams, making it difficult to meet market demands.
The system employs a three-light source structure, including first and second light sources disposed on the upper surface of the heat dissipation substrate, and a third light source above them. It achieves the switching between near and far light through a specific light-emitting lens and light-cutting mechanism. The combined design of the light-transmitting protective cover and the lens section improves the light utilization rate and heat dissipation effect.
It achieves high brightness and good heat dissipation in both high and low beam illumination, improves light utilization, enhances high beam illumination, and can reduce the size of the headlight or enhance heat dissipation performance.
Smart Images
Figure CN223649133U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive lighting technology, and more specifically, to a vehicle lamp. Background Technology
[0002] Currently, most automotive headlights on the market have their low beam and high beam sources located on the upper and lower surfaces of the heat sink, respectively. High and low beam switching is achieved by moving a cutter into and out of the light path of the low beam and high beam sources. However, when the cutter is in the light path, a significant amount of light is blocked, resulting in insufficient low beam illumination. Furthermore, as market demands for high beam brightness increase, the brightness of this type of headlight, even when the cutter is out of the original path to achieve high beam illumination, is insufficient to meet consumer requirements. Therefore, there is a need to find headlights with superior brightness in both high and low beam illumination. Utility Model Content
[0003] The present invention aims to overcome at least one of the defects of the prior art and provide a vehicle lamp that has high brightness and good heat sweeping effect in both high beam and low beam illumination.
[0004] The technical solution adopted by this utility model is as follows:
[0005] A vehicle headlight includes a heat dissipation substrate, a first light source, a second light source disposed on the upper surface of the heat dissipation substrate, a third light source disposed above the first light source and / or the second light source, a light-emitting lens for emitting light from the first light source, the second light source, and the third light source, and a light-cutting mechanism for realizing high / low beam switching. The light-emitting lens includes a first lens portion for emitting light from the first light source, a second lens portion for emitting light from the second light source, and a light-transmitting protective cover for emitting light from the third light source. The width of the light emitted from the first lens portion is greater than the width of the light emitted from the second lens portion, and the first lens portion and the second lens portion are arranged side by side in a horizontal direction.
[0006] In one embodiment, the light-transmitting protective cover is a hollow structure light-transmitting protective cover that maintains the emission direction of the light from the third light source.
[0007] In one embodiment, the hollow structure light-transmitting protective cover is a light-transmitting cover with equal wall thickness, and the light-transmitting cover with equal wall thickness is integrally formed with the first lens part and the second lens part.
[0008] In one embodiment, the third light source includes a third reflector and a third LED emitter disposed at the focal point of the third reflector.
[0009] In one embodiment, the number of the third LED light emitters is 2 to 4, and the number of the third reflectors is the same as the number of the third LED light emitters.
[0010] In one embodiment, the light-emitting surface of the third LED light-emitting body faces downward, the opening of the third reflector faces upward, and the plurality of third reflectors are integrally formed.
[0011] In one embodiment, the third light source includes a TIR lens and a third LED light emitter disposed at the optical center of the TIR lens, wherein the light-emitting surface of the TIR lens is parallel to the light-incident surfaces of the first lens portion and the second lens portion.
[0012] In one embodiment, the number of the third LED emitters is 2 to 4, and the number of the TIR lenses is the same as the number of the third LED emitters.
[0013] In one embodiment, the first light source includes a first reflector and a first LED light emitter disposed at the focal point of the first reflector, and the second light source includes a second reflector and a second LED light emitter disposed at the focal point of the second reflector, wherein the cup body of the first reflector is larger than the cup body of the second reflector.
[0014] In one embodiment, the light-cutting mechanism includes a light-cutting blade and a driving member for driving the light-cutting blade to move. The light-cutting blade includes a first light-cutting blade corresponding to a first light source and a second light-cutting blade corresponding to a second light source. When the light-cutting blade is located in the optical path, the first light source and the second light source are blocked by the first light-cutting blade and the second light-cutting blade respectively to form a near-beam light pattern.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The width of the light emitted by the first light source through the first lens is greater than the width of the light emitted by the second light source through the second lens. Therefore, the first light source can obtain a wide-range floodlight illumination effect, and the second light source can obtain a high-brightness focused illumination effect. Both the first and second light sources are set on the upper surface of the heat dissipation substrate, and most of the light from the first and second light sources can be fully utilized. When achieving low beam illumination, the light cutting mechanism only needs to block a very small portion of the light from the first and second light sources to achieve the low beam illumination effect, resulting in high light utilization. Furthermore, since both the first and second light sources are set on the upper surface of the heat dissipation substrate, the heat dissipation substrate can be made very thick, resulting in better heat dissipation of the headlight. In addition, a third light source is also set on the first and second light sources, which can significantly improve the high beam illumination effect. The part of the light-emitting lens used to emit the light from the third light source is a light-transmitting protective cover rather than a lens, which allows the third light source to be set closer to the light-emitting lens, leaving more space at the top of the headlight, thereby enhancing the heat dissipation effect or reducing the size of the headlight. Attached Figure Description
[0016] Figure 1This is a simplified diagram of the vehicle headlight structure of this utility model.
[0017] Figure 2 As in Example 1 Figure 1 Another perspective view.
[0018] Figure 3 for Figure 1 A simplified structural diagram with the light-transmitting protective cover removed.
[0019] Figure 4 for Figure 3 Another perspective view.
[0020] Figure 5 This is a simplified diagram of the light-emitting lens structure.
[0021] Figure 6 This is a schematic diagram of the structure of the third light source in Example 1.
[0022] Figure 7 This is a schematic diagram of the light path of the third light source in Example 1.
[0023] Figure 8 This is a schematic diagram of the beam cutter structure.
[0024] Figure 9 This is a simplified structural diagram of the vehicle headlight in Example 2 without the light-transmitting protective cover.
[0025] Figure 10 for Figure 7 Another perspective.
[0026] Figure 11 This is a schematic diagram of the structure of the third light source in Example 2.
[0027] Figure 12 This is a schematic diagram of the light path of the third light source in Example 2.
[0028] Explanation of reference numerals in the attached drawings: 1. Heat dissipation substrate; 2. First light source; 21. First reflector; 3. Second light source; 31. Second reflector; 4. Third light source; 41. Third reflector; 42. Third LED emitter; 43. TIR lens; 5. Light-emitting lens; 51. First lens section; 52. Second lens section; 53. Light-transmitting protective cover; 6. Light cutting mechanism; 61. Light cutter; 611. First light cutter; 612. Second light cutter. Detailed Implementation
[0029] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0030] Example 1
[0031] like Figures 1 to 3 As shown, this embodiment discloses a vehicle lamp, including a heat dissipation substrate 1, a first light source 2 and a second light source 3 disposed on the upper surface of the heat dissipation substrate 1, a third light source 4 disposed above the first light source 1 and / or the second light source 2, a light-emitting lens 5 for emitting light from the first light source 2, the second light source 3 and the third light source 4, and a light-cutting mechanism 6 for realizing high and low beam switching. The light-emitting lens 5 includes a first lens portion 51 for emitting light from the first light source 2, a second lens portion 52 for emitting light from the second light source 3 and a light-transmitting protective cover 53 for emitting light from the third light source 4. The width of the light emitted by the first lens portion 51 is greater than the width of the light emitted by the second lens portion 52. The first lens portion 51 and the second lens portion 52 are arranged side by side in the horizontal direction.
[0032] In this embodiment, the width of the light emitted from the first light source 2 through the first lens section 51 is greater than the width of the light emitted from the second light source 3 through the second lens section 52. Therefore, the first light source 2 can provide a wide-range floodlight illumination effect, while the second light source 3 can provide a high-brightness focused illumination effect. Since both the first light source 2 and the second light source 3 are disposed on the upper surface of the heat dissipation substrate 1, and most of the light from both sources can be fully utilized, the beam-cutting mechanism 6 only needs to block a very small portion of the light from the first light source 2 and the second light source 3 to achieve low-beam illumination. The lighting effect is excellent, with high light utilization. Since both the first light source 2 and the second light source 3 are located on the upper surface of the heat dissipation substrate 1, the substrate 1 can be made quite thick, resulting in better heat dissipation for the headlight. Furthermore, a third light source 4 is placed above the first and second light sources 2 and 3, significantly improving the high beam illumination. The portion of the light-emitting lens 5 that emits light from the third light source 4 is a light-transmitting protective cover 53 rather than a lens portion, allowing the third light source 4 to be positioned closer to the light-emitting lens 5. This allows for more space at the top of the headlight, enhancing heat dissipation or reducing its overall size. For example, adding a heat dissipation structure to the top space further improves heat dissipation. Alternatively, placing heat dissipation structures for the first and second light sources, such as cooling fans or radiators, in the top space can shorten the headlight's length, resulting in a smaller overall size.
[0033] Furthermore, such as Figure 1 , Figure 2 , Figure 5As shown, the light-transmitting protective cover 53 is a hollow structure light-transmitting protective cover that maintains the emission direction of the light from the third light source. More specifically, in this embodiment, the hollow structure light-transmitting protective cover is a light-transmitting cover with uniform wall thickness, and the uniform wall thickness light-transmitting cover is integrally formed with the first lens part 51 and the second lens part 52. Using a light-transmitting cover with uniform wall thickness will not change the emission direction of the light from the third light source, maintaining the original light emission effect of the third light source. Since the uniform wall thickness light-transmitting cover is integrally formed with the first lens part 51 and the second lens part 52, the manufacturing process is simpler. Furthermore, the light-transmitting protective cover 53, the first lens part 51, and the second lens part 52 can be made of glass, PMMA, or PC.
[0034] Furthermore, such as Figure 3 , Figure 4 , Figure 6 As shown, in this embodiment, the third light source 4 includes a third reflector 41 and a third LED light emitter 42 disposed at the focal point of the third reflector 41. More specifically, in this embodiment, the number of third LED light emitters 42 is two, and the number of third reflectors 41 is the same as the number of third LED light emitters 42. In other embodiments, the number of third reflectors 41 and third LED light emitters 42 can also be two or four. The more numerous they are, the better the lighting effect, but the higher the price and cost. Considering all factors, a number of two to four is preferred.
[0035] Furthermore, in this embodiment, the light-emitting surface of the third LED light-emitting element 42 faces downward, and the opening of the third reflector 41 faces upward. The plurality of third reflectors 41 are integrally formed, and their light-emitting beam pattern is shown in the diagram below. Figure 7 As shown, the light from the third LED light source 42 is emitted towards the light-emitting lens after being acted upon by the third reflector 41.
[0036] Furthermore, the first light source 2 includes a first reflector 21 and a first LED light emitter (not shown in the figure) disposed at the focal point of the first reflector 21, and the second light source 3 includes a second reflector 31 and a second LED light emitter (not shown in the figure) disposed at the focal point of the second reflector 31, wherein the cup body of the first reflector 21 is larger than the cup body of the second reflector 31.
[0037] Furthermore, such as Figure 8As shown, the light-cutting mechanism 6 includes a light-cutting blade 61 and a driving component (not shown) for driving the movement of the light-cutting blade 61. The driving component is not particularly limited and can adopt a conventional driving structure available on the market, such as a solenoid valve. The light-cutting blade 61 includes a first light-cutting blade 611 corresponding to the first light source and a second light-cutting blade 622 corresponding to the second light source. When the light-cutting blade 61 is located in the optical path, the first light source 2 and the second light source 3 are blocked by the first light-cutting blade 611 and the second light-cutting blade 612 respectively, and thus form a near-beam pattern.
[0038] Example 2
[0039] like Figure 1 , Figures 9 to 12 As shown, this embodiment discloses a vehicle lamp, including a heat dissipation substrate 1, a first light source 2 and a second light source 3 disposed on the upper surface of the heat dissipation substrate 1, a third light source 4 disposed above the first light source 2 and / or the second light source 3, a light-emitting lens 5 for emitting light from the first light source 2, the second light source 3, and the third light source 4, and a light-cutting mechanism 6 for realizing high and low beam switching. The light-emitting lens 5 includes a first lens portion 51 for emitting light from the first light source 2, a second lens portion 52 for emitting light from the second light source 3, and a light-transmitting protective cover 5 for emitting light from the third light source 4. 3. The width of the light emitted from the first lens section 51 is greater than the width of the light emitted from the second lens section 52. The first lens section 51 and the second lens section 52 are arranged side by side in the horizontal direction. The third light source 4 includes a TIR lens 43 and a third LED light emitter 42 disposed at the optical center of the TIR lens 43. The light emitting surface of the TIR lens 43 is parallel to the light incident surface of the first lens section 51 and the second lens section 52. The number of third LED light emitters is 3, and the number of TIR lenses 43 is the same as the number of third LED light emitters.
[0040] This embodiment 2 is largely the same as embodiment 1, except that the third light source 4 in this embodiment 2 is different from that in embodiment 1. In this embodiment 2, the third light source 4 uses a TIR lens 43 to collect light from the third LED light emitter. The TIR lens 43 has a better light collection effect, which can improve the utilization rate of the third LED light emitter and enhance the high beam illumination effect. The similarities between this embodiment 2 and embodiment 1 will not be repeated here.
[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A vehicle light, characterized in that, The device includes a heat dissipation substrate, a first light source and a second light source disposed on the upper surface of the heat dissipation substrate, a third light source disposed above the first light source and / or the second light source, a light-emitting lens for emitting light from the first light source, the second light source and the third light source, and a light-cutting mechanism for realizing near-far beam switching. The light-emitting lens includes a first lens portion for emitting light from the first light source, a second lens portion for emitting light from the second light source, and a light-transmitting protective cover for emitting light from the third light source. The width of the light emitted from the first lens portion is greater than the width of the light emitted from the second lens portion, and the first lens portion and the second lens portion are arranged side by side in a horizontal direction.
2. The vehicle light according to claim 1, characterized in that, The light-transmitting protective cover is a hollow structure that maintains the emission direction of the light from the third light source.
3. The vehicle light according to claim 2, characterized in that, The hollow structure light-transmitting protective cover is a light-transmitting cover with equal wall thickness, and the light-transmitting cover with equal wall thickness is integrally formed with the first lens part and the second lens part.
4. The vehicle light according to claim 1, characterized in that, The third light source includes a third reflector and a third LED light emitter located at the focal point of the third reflector.
5. The vehicle light according to claim 4, characterized in that, The number of the third LED light emitters is 2 to 4, and the number of the third reflectors is the same as the number of the third LED light emitters.
6. The vehicle light according to claim 4, characterized in that, The light-emitting surface of the third LED light-emitting body faces downward, and the opening of the third reflector faces upward. The plurality of third reflectors are integrally formed.
7. The vehicle light according to claim 1, characterized in that, The third light source includes a TIR lens and a third LED light emitter disposed at the optical center of the TIR lens. The light-emitting surface of the TIR lens is parallel to the light-incident surfaces of the first lens section and the second lens section.
8. The vehicle light according to claim 7, characterized in that, The number of the third LED emitters is 2 to 4, and the number of the TIR lenses is the same as the number of the third LED emitters.
9. The vehicle lamp according to any one of claims 1 to 8, characterized in that, The first light source includes a first reflector and a first LED light emitter disposed at the focal point of the first reflector. The second light source includes a second reflector and a second LED light emitter disposed at the focal point of the second reflector. The cup body of the first reflector is larger than the cup body of the second reflector.
10. The vehicle lamp according to any one of claims 1 to 8, characterized in that, The light cutting mechanism includes a light cutter and a driving member for driving the light cutter to move. The light cutter includes a first light cutter corresponding to a first light source and a second light cutter corresponding to a second light source. When the light cutter is located in the optical path, the first light source and the second light source are blocked by the first light cutter and the second light cutter respectively to form a near-beam light pattern.